<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert title="添加商品信息" type="info" center show-icon :closable="false"></el-alert>
      <el-steps align-center :space="200" :active="activeIndex-0" finish-status="success">
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="ruleFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="beforeTabLeave"
          @tab-click="tabClick"
        >
          <el-tab-pane name="0" label="基本信息">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input type="number" v-model="addForm.goods_price"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input type="number" v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input type="number" v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="{ expandTrigger: 'hover',label:'cat_name',value:'cat_id',children:'children' }"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane name="1" label="商品参数">
            <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  size="mini"
                  v-for="(cb,i) in item.attr_vals"
                  :key="i"
                  :label="cb"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane name="2" label="商品属性">
            <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane name="3" label="商品图片">
            <el-upload
              :action="uploadUrl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handelSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane name="4" label="商品内容">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button @click="add" type="primary" class="butAdd">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <el-dialog title="图片预览" :visible.sync="previewDialogVisible" width="50%" >
      <img :src="previewPath" alt="" class="previewimg">
    </el-dialog>
  </div>
</template>

<script>
import _ from'lodash'

export default {
  data() {
    return {
      activeIndex: "0",
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce:"",
        attrs:[],
      },
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称！", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格！", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量！", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量！", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选择商品分类！", trigger: "blur" },
        ],
      },
      cateList: [],
      manyTableData: [],
      onlyTableData: [],
      uploadUrl: "http://127.0.0.1:8888/api/private/v1/upload",
      headerObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      previewPath: "",
      previewDialogVisible:false,
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品分类列表失败！");
      } else {
        this.cateList = res.data;
      }
    },
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) this.addForm.goods_cat = [];
    },
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请先选择商品分类！");
        return false;
      }
    },
    async tabClick() {
      if (this.activeIndex === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "many" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取动态参数列表失败!");
        }
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length !== 0 ? item.attr_vals.split(" ") : [];
        });
        this.manyTableData = res.data;
      } else if (this.activeIndex === "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "only" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取静态属性列表失败!");
        }
        this.onlyTableData = res.data;
      }
    },
    handlePreview(file) {
      this.previewPath = file.response.data.url;
      this.previewDialogVisible = true
    },
    handleRemove(file) {
      const filePath = file.response.data.tmp_path;
      const i = this.addForm.pics.findIndex((x) => x.pic === filePath);
      this.addForm.pics.splice(i, 1);
    },
    handelSuccess(response) {
      const picInfo = { pic: response.data.tmp_path };
      this.addForm.pics.push(picInfo);
    },
    add(){
      this.$refs.ruleFormRef.validate(async valid => {
        if(!valid){
          return this.$message.error("请填写必要的表单项！")
        }else{
          const form = _.cloneDeep(this.addForm)
          form.goods_cat = form.goods_cat.join(',')
          this.manyTableData.forEach(item=>{
            const newInfo = {
              attr_id:item.attr_id,
              attr_value:item.attr_vals.join(" ")
            }
            this.addForm.attrs.push(newInfo)
          })
          this.onlyTableData.forEach(item=>{
            const newInfo = {
              attr_id:item.attr_id,
              attr_value:item.attr_vals
            }
            this.addForm.attrs.push(newInfo)
          })
          form.attrs = this.addForm.attrs
          const {data:res} = await this.$http.post("goods",form)
          if(res.meta.status !== 201){
            return this.$message.error("添加商品失败！")
          }else{
            this.$message.success("添加商品成功")
            this.$router.push('/goods')
          }
        }
      })
    },
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) return this.addForm.goods_cat[2];
      return null;
    },
  },
};
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0px 5px 0px 0px !important;
}
.previewimg{
  width: 100%;
}
.butAdd{
  margin-top: 15px;
}
</style>